Alright you guys try this, I let my car sit over night and when i start my car my coolant buzzer noise thing goes off..So u know i refill it or whatever. But one day i decided to not refill it for some odd reason due to the fact i refilled it almost everyday and it just went off after warm up. Sometimes it fluctuates like go on go off go on go off so id on't know where to start ti diagnois the problem. I just replaced my radiator and my cooling fans so i don't know it didn't do that before my Radiator was replaced what could it be?

 

I had a simular problem where say it was cold out side and when i went to start it up the light came on and the buzzer deal and I let it warm up for about 30sec or so. I checked the coolent leve and it was good. The bad thing is after about a day or 2 i noteced the coolent dumped out. I filled it up and it was fine so I thought. Then about 3 more days later my motor finaly went out. Hopefuly thats not your porblem there.

 

Your cooling system still has air in it from the work you did. Keep burping the system and adding water/coolant.

 

You may have a faulty pressure cap that's sucking in air instead of coolant from the over flow bottle, or the overflow bottle is empty, or the rubber hose to it has a crack in it.

Alternativley this could be an indication of some seals starting to go in the engine and you're getting exhaust gasses in the coolant....

On my '95 the connector on the aluminum ast had a leak so under heat/pressure it would push coolant out into the overflow bottle, then on cool-down it would suck air back in the loose connection thus eventually making an airpocket in the system that would make the buzzer go off.

 

Hrmm...Thakns u guys...Imma burp the system